2 484 379 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Details

Composite, with 1 known prime factor. Cofactor is composite.

Trial Factored to 2⁶⁸

TF target 2⁶³

Factored

Factor	Digits	Bits	Date
8648738373164860869881	22	72.9	2014-11-10 01:16:08

P-1 factors

Date	Factors	B1	B2
2014-11-10	8648738373164860869881	2382500	85770100

ECM

Digits	B1	Curves
25	50000	169 / 280

Estimated T-Level: 23.0 ⓘ

TF below 2^71 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift	Software
Factored		schebi	69B02120E2CC4638	0	Windows 16-bit,Prime95,v13,PFA,(aka WP0)
Factored	1999-08-07	Leo Smulders	69B02120E2CC4638	778549	Windows,Prime95,v18,(aka WU1)

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	PRP without proof (not generated)	2017-10-14	Oliver Kruse	61DDC4DF66FC4972	1	2306472	5	3
Verified	PRP without proof (not generated)	2017-11-29	storm5510	61DDC4DF66FC4972	1	1493898	5	3

History

Date	User	Type	Result
2022-03-10	LordJulius	NF	no factor TF: 1-60
2017-11-29	storm5510	C-PRP	M2484379/8648738373164860869881 : 61DDC4DF66FC4972
2017-10-14	Oliver Kruse	C-PRP	M2484379/8648738373164860869881 : 61DDC4DF66FC4972
2014-11-10	mikr	F-PM1	Factor: 8648738373164860869881 / B1=2382500, B2=85770100
2014-09-03	Joss	NF-PM1	B1=120835
2013-01-23	dbaugh	NF	no factor TF: 62-63
2012-06-09	Sebastian Hornbostel	NF	no factor TF: 61-62
2011-01-21	Oscar Östlin	NF-PM1	B1=95000, B2=1947500, E=6
2010-12-22	Joss	NF-PM1	B1=20000
2009-01-14	Sturle Sunde	NF	no factor TF: 60-61
2003-10-31	Team Prime Rib	NF-PM1	B1=15000, B2=228750
2003-10-14	-anonymous-	NF-PM1	B1=2048, B2=204800
1999-08-07	-anonymous-	C-LL	69B02120E2CC4638
1999-05-02	-anonymous-	NF	no factor TF: 1-59